Since an inf-projection of a convex Rockafellian is convex (see for example [1]}), it is immediately clear that the convexity requirement in the corollary holds for such Rockafellians. In this setting, a dual problem of the form \(\mathop {\rm maximize}_y \inf _{x,u} f(u,x) - \langle y, u-\bar{u}\rangle \)  furnishes \(\bar{y}\)  [2]}.
